Messaging — coming soon in Tanzania
Coming soonBulk SMS, WhatsApp, voice and USSD for Tanzania
Four networks, one API, and no favourite among them.
Tanzania has no dominant mobile network. The TCRA's count for the quarter ending March 2026 puts Vodacom at 36.19 million subscriptions, Yas at 31.85 million, Airtel at 23.75 million and Halotel at 18.32 million — 111.9 million in total, and the largest of the four holds 32.3%. Reach one network well here and you have reached about a third of the country. That is a different engineering problem from Kenya's, and it is the one Lineserve Messaging is being built around: SMS, WhatsApp, voice and USSD from one API, on the account your Dar es Salaam servers already live on. It is not open yet — join the waitlist and we will tell you when it lands.
- Coming soon — join the waitlist
- SMS, WhatsApp, voice and USSD from one API
- Written for a four-network country, not a one-network one
- Quoted in shillings when it launches, on your existing account
- Data residency for Tanzania's Personal Data Protection Act — your data stays in-country
Launching soon · Billed in TZS
Channels
Every way your customers' phones can listen
One API and one dashboard across all channels — start with Bulk SMS, add the rest as they launch.
Bulk SMS
Transactional and promotional SMS with delivery reports, two-way replies, and reach into 195 countries over direct carrier routes.
WhatsApp Business API
Rich media, message templates, and two-way conversations on the channel your customers already use.
Voice
Programmatic calls and IVR menus from your applications — announcements, verifications, and call flows.
USSD
Interactive menus that work on every handset with no data or smartphone required — built for reach.
Airtime
Send airtime top-ups and rewards to any number via API — incentives, refunds, and disbursements.
OTP & 2FA
One-time codes over SMS, WhatsApp, or voice with smart fallback — verification that actually arrives.
Channel availability and rates will be announced at launch — talk to sales for early access.
The networks
Nobody in Tanzania has a majority, and that changes the design
Vodacom 36.19 million, Yas 31.85 million, Airtel Tanzania 23.75 million, Halotel 18.32 million, TTCL 1.80 million. Four operators of real size, none above a third, and a customer base that does not sort itself neatly by city or by income — a Dar es Salaam retailer's order book, a lender's borrowers and an NGO's field respondents are spread across all four. So the question to ask a supplier here is not whether it reaches Tanzania. It is what happens to the quarter of your list sitting on the operator nobody optimised for.
Then look at the handsets. TCRA puts smartphone penetration at 42.5% — 29.8 million devices against 111.9 million subscriptions. The majority of phones in Tanzanian hands are not smartphones, which puts this market a long way from a WhatsApp-only strategy. SMS reaches every one of them. A voice call reaches every one of them. A USSD session reaches every one of them and needs no data bundle at all, even where 4G coverage — now 94.2% of the population — has arrived.
There is a language question too, and it is a Tanzanian one. Swahili is the national lingua franca and what most of your recipients actually think in; English is the language of formal business. Swahili is written in the Latin alphabet, so it sits inside the standard 160-character message without dropping into the shorter Unicode encoding — but Swahili runs longer than English, and a notice that fitted in one part will quietly become two when it is translated. That is a copywriting decision with a line-item consequence, and it is worth settling before a campaign rather than after the statement.
The regulator is the Tanzania Communications Regulatory Authority, which runs a converged licensing framework — network facility, network service, application service and content service classes — and had licensed 35 network facilities operators, 16 network service providers and 146 application service providers as of September 2024. What may be sent into a Tanzanian handset, under whose name and on what basis, is decided here rather than in Nairobi or Lagos. Bring your requirements to the waitlist conversation and they get worked through properly.
111.9M
Telecom subscriptions in Tanzania (TCRA, Q1 2026)
32.3%
Share held by the largest mobile operator (TCRA, Q1 2026)
42.5%
Smartphone penetration — 29.8M devices (TCRA, Q1 2026)
80.98M
Registered mobile money accounts (TCRA, Q1 2026)
Voice carries where text does not
A recorded call in Swahili reaches the cooperative member who reads little English, the farmer at the edge of a field, the driver on the Dar–Mbeya road. It also does what text cannot: it interrupts. For a payout confirmation or a collection date, a phone that rings gets attention an inbox does not.
Ask about the network you never think about
Anyone can show you numbers for the biggest operator. The useful question here is what a supplier can tell you, per network and per message, about the ones that did not arrive — including on the operator carrying the smallest share of your list. Ask it of everyone you shortlist, us included.
Payments
Four wallets, 1.99 billion transactions, and a message after each one
Tanzanian mobile money is a genuine four-way market: 80.98 million registered accounts and 1.99 billion transactions in a single quarter. M-Pesa — operated here by Vodacom Tanzania, a separate company under a separate regulator from the Kenyan product of the same name — holds 40.97% of accounts, Mixx by Yas 31.02%, Airtel Money 17.79%, with HaloPesa taking most of the remainder. Behind them the Bank of Tanzania runs an instant payment switch connecting banks, wallets and licensed providers, which moved US$11.6 billion in 2024. Every one of those transactions ends in a notification on somebody's handset, spread across four operator bases rather than concentrated on one. That is the shape of Tanzanian message volume.
Priced in shillings, at launch
Rates are published when the product opens, in TZS, from a Tanzanian price list. That is not a preference: quoting and accepting foreign currency for domestic transactions has been a live legal matter here since the Finance Act 2024 and GN 198 of 2025, and a shilling figure is the only kind a Tanzanian finance team can hold steady across a year.
M-Pesa
A supported method for Tanzanian customers on every live Lineserve product, settled in shillings with no conversion and no foreign card involved. Messaging joins the same billing arrangement when it opens.
Bank transfer, or card
Bank transfer is what a Tanzanian business reaches for on anything sizeable, and messaging spend is the kind of variable monthly figure that goes through an approval first. Visa and Mastercard are accepted in shillings for the teams that prefer a card on file.
Messaging has no published rate card before launch — ask [email protected], or ring +255 761 847 121, to be told first. Displayed prices across the site exclude VAT; Tanzania's 18% is shown separately at checkout.
The platform
Built for delivery, not just sending
Carrier routes, receipts, retries, and regulatory filings — the unglamorous parts of messaging, handled.
Direct carrier connections
450+ direct routes into 195 countries — messages take the short path, not the grey route.
Two-way messaging
Inbound replies stream to your webhook in real time for surveys, support, and confirmations.
Real-time delivery reports
Per-message delivery receipts with failure reasons, and automatic retries up to three times.
Message scheduling
Queue campaigns up to six months ahead, in any timezone, from the dashboard or API.
Sender ID management
We file registrations with the regulator in each market and keep them current.
Compliance built in
GDPR-aligned, built for Kenya's DPA and Nigeria's NDPR, with automatic DND filtering for promos.
REST API & 7 SDKs
PHP, Python, Node.js, Java, C#, Go, and Ruby — most teams send their first message within the hour.
Campaign tools
Contact groups, templates, and per-recipient personalization without writing code.
99.95% uptime
Redundant delivery infrastructure across data centres, with automatic failover.
Regions
tz-1a is home. Nairobi and Lagos are on the same account.
Deploy in Dar es Salaam and your data stays in Tanzania, in the same city as most of the people using it. ke-1a in Nairobi and ng-1a in Lagos are one API call away on the same console and the same shilling bill, so a standby or an offsite copy is a line in a config file rather than a supplier to onboard. Typical in-metro round trips are around 6 ms in Dar es Salaam, ~2 ms in Nairobi and ~4 ms in Lagos.
Traffic between Tanzanian networks is exchanged in Dar es Salaam. The Tanzania Internet eXchange has run there since 2003 as a project of TISPA, the Tanzanian ISP association; PeeringDB records 32 networks and 798G of connected capacity there, with Akamai, Meta, Cloudflare and TTCL among them, and no fee to join. The point of a local exchange is a plain one: a packet from one Tanzanian network to another changes hands in the city, instead of being hauled to Europe and back to travel four kilometres.
International capacity comes ashore in the same city: SEACOM, EASSy and SEAS land at Dar es Salaam, a named landing point on 2Africa as well. Inland, the National ICT Broadband Backbone carries it onward — government fibre managed by TTCL, 13,820 km laid of a 16,280 km target as of FY2024/25, reaching every region and crossing into Zambia, Malawi, Kenya, Uganda, Rwanda and Burundi. One origin in Dar es Salaam therefore has a real answer for a user in Mwanza, a site office outside Geita and a clearing agent at Tunduma.
TCRA's count for the quarter ending March 2026 tells you who is at the other end: Vodacom 36.19 million subscriptions, Yas 31.85 million, Airtel Tanzania 23.75 million, Halotel 18.32 million, against 58.9 million internet subscriptions nationally, roughly 99% of them mobile wireless. The largest reaches under a third of the country: no carrier arrangement covers a Tanzanian audience, and being inside Tanzania covers all of them at once.
Tanzania
Dar es Salaam
~6 ms
typical, within metro · Data stays in Tanzania
Kenya
Nairobi
~2 ms
typical, within metro · Data stays in Kenya
Nigeria
Lagos
~4 ms
typical, within metro · Data stays in Nigeria
Uganda
Kampala
~3 ms
typical, within metro · Data stays in Uganda
Use cases
Built for what you're building
OTP & 2FA
One-time codes for banking, fintech, and SaaS logins — delivered in seconds, with fallback.
Marketing campaigns
Opt-in promotions with personalization, scheduling, and automatic DND filtering.
Alerts & notifications
Transaction confirmations, security alerts, and outage notices the moment they happen.
Reminders
Appointments, payments, and renewals — fewer no-shows and late payments, on autopilot.
How it works
First message in under an hour
Create an account
Sign up and get sandbox API keys with free test credits — no card required.
Register your sender ID
Send us your business details and we file with the regulator in each market for you.
Send from anywhere
One REST call or the dashboard — delivery reports stream back to your webhook.
Uptime SLA
99.9%
- When hardware fails
- When the region is the risk
- Service credits applied automatically when we miss the SLA
Support
A Tanzanian line, and a clock that already matches yours
Call +255 761 847 121. Tanzania is on East Africa Time all year with no daylight saving, so there is no drift to track and no arithmetic before you dial — business hours mean the same thing in March as in November. A ticket opened at the start of a Dar es Salaam morning lands inside a working day, rather than at the bottom of a queue that wakes up as yours is ending.
That match is worth the most at the moment you can least afford it. Month-end, last Friday, 16:40: the reconciliation job has stalled, the settlement file has not written, and the deadline is Monday. What you want then is an engineer who is awake and at work with your instance ID in front of them — a resize that needs a reboot window, a snapshot restored into a new instance, a routing question, a port that has stopped answering. Not a form, and not a five-hour wait for somebody's morning.
[email protected] takes the commercial half, and it is worth using before you order: your TIN and registered name as the TRA holds them, a purchase-order or grant code the invoice must carry, an annual invoice that fits the budget year. Migration planning and assistance come at no extra charge, from a rack in Frankfurt or from across town. Customer references are available under NDA.
Tanzania
+255 761 847 121Sales
[email protected]Why Lineserve
Local routes beat global relays
Global aggregators relay African traffic through whoever is cheapest this week. Direct carrier connections and local registrations are what actually move delivery rates.
Tax & invoicing
18% VAT, and a receipt the TRA will actually let you claim
Mainland VAT is 18%, administered by the Tanzania Revenue Authority, and it applies to digital and electronic services; Zanzibar administers its own VAT on digital services through the Zanzibar Revenue Authority. Messaging will be quoted the way everything else here is — exclusive of VAT, with the tax shown separately — so the number in your budget line is the number on the quote.
Tanzania is unusually exact about what a claimable receipt looks like. Mainland suppliers above the turnover threshold issue receipts through an Electronic Fiscal Device, and under EFD protocol 2.1 every invoice carries a verification code — no code, no acceptance by the EFD Management System, no input tax. A VAT-registered buyer therefore takes the same checklist to every supplier: registered name and identifiers, your own TIN, a unique invoice number, the service and the period, the taxable value, and the VAT stated separately. Send [email protected] your TIN and registered name as the TRA holds it, and the billing account carries them from the first run.
Messaging spend has a different shape from server spend
A server is a fixed monthly figure. Message volume moves with your loan book, your harvest calendar or your enrolment cycle, and a finance team seeing that for the first time will want to know what drives a spike. Work out your own volumes now — reminders per borrower per cycle, notifications per order — and the rate card slots into a model that already exists.
Prices exclude VAT. Talk to [email protected] or +255 761 847 121 about invoicing requirements early; it is a short conversation at the start of a relationship and an awkward one in April.
Data residency
In Tanzania, taking personal data out needs a permit first
Consider what a messaging platform holds. Every number you sent to, which identifies a living person. The text, which can carry a balance, a debt, a diagnosis or a beneficiary's name. The timestamp, which places that person in a moment. For an NGO with a beneficiary list or a lender with a book of borrowers, the message log is often the most sensitive database in the organisation.
Tanzania's Personal Data Protection Act, 2022 — Chapter 44 — has been in force since 1 May 2023, and the Personal Data Protection Commission has been fully operational since 3 April 2024. Controllers and processors alike register with the Commission before processing. The clause that decides where a messaging platform ought to live is the cross-border one: personal data leaves Tanzania on a permit from the Commission, supported by adequacy in the destination country or by safeguards evidenced in an international, bilateral or contractual arrangement.
The Regulation 20 application asks for the applicant and the recipient, the data subjects, the categories of personal data, the purpose and duration of the transfer, the destination country and entity, and the security arrangements there. The Commission then approves, asks for more, or refuses, and monitors the conditions afterwards. That is prior authorisation, on the regulator's timetable rather than yours. Hold the recipient list and the message log in tz-1a, in Dar es Salaam, under Tanzanian law, and the question does not arise for them — which is what data residency for Tanzania's Personal Data Protection Act means here. The controller obligations stay yours, and they are lighter when the data never left.
The penalties are published
Administrative penalties under the Act reach TZS 100,000,000, and criminal fines TZS 5,000,000,000 for corporations. A regime that publishes numbers like those is a regime whose questions turn up in donor audits, bank onboarding and procurement long before they turn up in an enforcement letter.
What Tanzania sends
The message types this market runs on
OTPs and login codes
The message where a delay is indistinguishable from a failure: the customer taps resend, gives up, then rings support. Banks, insurers and anything with a Tanzanian login population send these constantly — and here they have to arrive equally well on four networks, because that is how the login population is spread.
Transaction alerts and payment confirmations
Money moved, so somebody gets told. With 1.99 billion mobile money transactions in a quarter, Tanzanians are trained to expect a confirmation within seconds, and a business whose own alerts land slower than the wallet's looks broken next to it. Agent-banking backends, microfinance and merchant platforms live on this stream.
Repayment and contribution reminders
Microfinance groups, savings schemes, insurers and asset financiers run on sequenced contact: a reminder before the date, a nudge on it, an escalation after, and a self-service route for the member who would rather check a balance than call anyone. That last one is a dialled menu — the borrower short of money is also short of data.
Delivery, dispatch and logistics notifications
Dar es Salaam is the transit gateway for six land-linked countries, and the traffic is not only consumer parcels: container released, truck loaded, driver at the weighbridge, consignment cleared. Freight forwarders, distributors and online retailers all need a message that reaches a driver or a warehouse clerk on whichever network they are on.
Field data collection and surveys
TANGO alone counts over 485 member organisations, and the large donor programmes run country operations from Dar es Salaam. A USSD session or a structured SMS exchange collects an answer from a respondent with no smartphone and no bundle — the difference between a survey that reaches its sample and one that reaches the connected quarter of it.
Cooperative payouts and agricultural extension
Coffee, tea, cashew, clove and tobacco cooperatives pay thousands of members and have to tell each of them what was paid and why. Around it sits extension messaging — planting windows, input availability, warehouse receipt confirmations — in Swahili, to feature phones, on a calendar set by the harvest rather than a marketing plan.
USSD menus as the whole product
For microfinance, insurers and utilities, the dialled menu is not a fallback channel but the customer interface: balance, statement, claim status, meter top-up, membership check. It works on every handset in the country and costs the customer nothing to start, which is precisely why it has not gone anywhere.
When it lands
What moving would look like
From four integrations you maintain yourself
Reaching Tanzania properly has historically meant wiring up more than one connection, and the teams that did it still carry the cost: separate credentials, separate formats, separate quirks in how each side reports a failure, separate people to call when something stops at 22:00. The code is usually fine. It is everything around the code that gets expensive, and it gets expensive again for whoever inherits it.
From a supplier that treats Tanzania as one market
Some platforms sold into this country were designed for a market with a dominant network, and it shows in the reporting: one national figure that hides the operator where the messages went quiet. Before moving anything, split your own delivery data by network and ask what your supplier can tell you about the weakest column. Then move one low-stakes stream, keep the traffic that must not blink where it is, and compare. Normalise your numbers to one format while you are there — Tanzanian lists carry 06, 07, 255 and +255 versions of the same person — and carry your opt-out list across intact.
Messaging is not open yet, so none of this is a switch you can make today. Join the waitlist at [email protected], or ring +255 761 847 121, and we will tell you when it is ready and what the first release covers.
FAQ
Questions, answered
Transactional messages — OTPs, confirmations, notifications — are exempt from Do-Not-Disturb registries and deliver around the clock. Promotional campaigns require opt-in and are automatically filtered against DND lists where they apply.
We file the paperwork with the regulator for you. In Kenya, Communications Authority approval typically takes 2–3 business days once your business documents are in; Nigeria and Tanzania follow their own regulators with similar handling.
160 characters for standard GSM text, 70 for Unicode (emoji, Arabic, and other scripts). Longer messages concatenate automatically, up to 6 parts.
Yes. Two-way messaging delivers inbound replies to your webhook in real time — for surveys, support conversations, and confirmations.
Real-time delivery receipts stream to your webhook with per-message status. Failed messages retry automatically up to three times, and you're not charged for messages that never deliver.
Yes — schedule messages up to six months ahead, in any timezone, from the dashboard or the API.
A REST API with SDKs in seven languages — PHP, Python, Node.js, Java, C#, Go, and Ruby. Most teams send their first message in under an hour, starting in a sandbox with free test credits and no card required.
Yes. GDPR-aligned with in-country data residency, built for Kenya's Data Protection Act and Nigeria's NDPR, with DND registry filtering applied to promotional traffic automatically.
No. Messaging is in development — no checkout, no rate card, nothing to log into yet. Join the waitlist at [email protected] and you hear from us when it opens.
There is no published date yet. The waitlist hears first, with a plain account of what the first release covers and what follows it.
Email [email protected] or ring +255 761 847 121 with the channels you care about, the kind of messages you send and a rough monthly volume. That last figure is the useful one — it shapes the first release.
Bulk SMS, WhatsApp, voice and USSD from one API and one dashboard. Which of them ships first, and in what order, is what the waitlist will be told first.
Rates are announced at launch, in Tanzanian shillings. There is no messaging price on this site today.
Reaching all four is the problem this product is being built around, because in Tanzania it is not optional — the largest operator holds 32.3% of subscriptions, so any one network is a minority of your list. How that coverage is delivered will be published when the product opens.
Yes, in two ways that matter. Kenya has one network carrying most of the country; Tanzania has four with no majority holder. And smartphone penetration here is 42.5%, so the share of your list reachable only by SMS, voice or USSD is larger.
Sender identity is regulated country by country and the rules differ. Bring your requirements to the waitlist conversation — the brand you want to send as, the markets you send into — and the team will go through what applies at launch.
Swahili for most recipient lists, English where the audience is formal business. Swahili uses the Latin alphabet, so it fits the standard 160-character message without dropping into the shorter Unicode encoding — but it runs longer than English, so translate first and count second.
Because it works on every handset in Tanzania, needs no data bundle and no install, and is how a large share of the country already interacts with money. With smartphones at 42.5% of devices, a dialled menu is not a legacy channel — it is the one that reaches everybody.
That is what tz-1a is for. Dar es Salaam is where Tanzanian customers' data is held today for every live Lineserve product, and messaging is being built to run there too. Recipient lists, message bodies and delivery logs are personal data under the Personal Data Protection Act.
Not for data that stays in Tanzania — the Commission's permit regime governs transfers out of the country, and that question does not arise for data held in Dar es Salaam. Your own obligations as a controller, registration included, are unchanged.
Customer references are available under NDA. Ask [email protected] and the team will arrange one against the sector and workload you are buying for.
Every channel, one API — launching soon
Bulk SMS leads the way, with WhatsApp, voice, USSD and airtime to follow. Talk to us to reserve early access.
Launching soon · Sandbox with free test credits · Billed in TZS